WASHINGTON — The Federal Reserve, mixing its concern about the weak economy with worries about the rising cost of energy and food, reduced short-term interest rates Wednesday for the seventh time in seven months, and signaled a likely pause from any additional cuts for now.

The Fed’s action, lowering short-term rates to 2 percent from 2.25 percent, followed new indications that the American economy remained fragile, expanding by 0.6 percent on an annualized basis in the first quarter, not an overall downturn that would have indicated a full recession had begun.

The poor record of economic growth, reported by the Commerce Department on Wednesday morning, reflected what most Americans have been experiencing since late last year — declines in consumer spending, housing prices and business investment, along with spreading unemployment.

Wall Street gave up sharp gains after the Federal Reserve announcement. The Dow Jones industrial average, which was up about 120 points and moved higher after the announcement, was up less than 30 points about an hour later.

Although many economists have called on the Fed to shift the focus of its worries from a possible recession to the spike in inflation caused by huge increases in the cost of food and energy, the Fed appeared to remain primarily focused on signs of weakness and instability in the financial markets and the economy at large. Yet it also said in its statement that inflation remained a concern.

The Fed’s action once again opened a window into what many economists say has been a lively internal debate over whether inflation or a slowing economy posed a greater threat.

Two anti-inflation hawks — Richard W. Fisher, president of the Dallas Fed, and Charles I. Plosser, president of the Philadelphia Fed — voted against lowering the rates, as they had last month when the Fed’s action cut rates to 2.25 from 3 percent.

In its statement, the Fed said that “It will be necessary to continue to monitor inflation developments carefully.”

The indication of a pause in future rate cuts came in the committee’s declaration that its actions to date, including its opening new lending facilities and its step last month to bring about the orderly purchase of the investment bank Bear Stearns, “should help to promote moderate growth over time and to mitigate risks to economic activity.”

Although some prominent economists have suggested that inflationary fears are so high that it did not make sense to cut rates further, the smallness of the cut on Wednesday might not aggravate inflation significantly.

Martin Feldstein, professor of economics at Harvard and president of the National Bureau of Economic Research, had earlier said he opposed a quarter-point cut but said in an interview on Tuesday that such a cut would not be “significant one way or another.”

“I think it will do little good in terms of economic expansion and the credit markets problems,” Mr. Feldstein said shortly before the announcement by the Fed. “I think it will exacerbate somewhat the commodity price boom. It would be better not to do it than do it. But if they feel they have to do it one more time and quit, that wouldn’t be the end of the world.”

The latest step by the Fed follows a period of unusual ups and downs in its interest rate policy in the last four years, as the economy has veered from an overheated state to its current downturn. In 2004, when fear of inflation was paramount, the Fed embarked on a succession of rate increases, pausing in mid-2006 at 5.25 percent.

It was then, however, that high interest costs helped burst the housing bubble, ushering in a period of defaults in subprime mortgages and shakiness among sub-prime lenders and mortgage holders. By July of last year, the Fed chairman, Ben S. Bernanke, was warning of a crisis in the subprime market.

As financial markets plunged in August, Mr. Bernanke led the Fed into its current phase of lowering interest rates. The Fed also pumped liquidity into the markets by making it easier for banks to borrow, and it began suggesting that it would do what was necessary to combat the tight credit market.

But even in the last six months, the Fed has offered mixed, and occasionally discordant, signals. In October, the Fed was still saying that inflation was as much of a concern as a recession. “The upside risks to inflation roughly balance the downside risks to growth,” it said.

In a somewhat embarrassing reversal, however, the Fed changed course after banks and financial institutions in Europe and the United States began writing off the costs of their bad housing loans. The Fed had to abruptly cast its inflationary fears aside, set up new lending facilities for troubled banks and inject more money into the markets.

The most recent crisis culminated in mid-March with the Fed’s extraordinary role in arranging the sale of Bear Stearns to JPMorgan Chase, accepting $29 billion in mortgage-related securities as collateral in a deal that averted what Mr. Bernanke said was the possibility of a global panic in financial markets.

But the Fed’s actions in March were accompanied by internal disagreement as Mr. Fisher and Mr. Plosser voted against the cut of three-quarters of a percentage point.

“My view is that the Fed is back doing the silly things it did in the 1970s, of trying to make judgments that have long-term consequences based on short-term data,” said Allan H. Meltzer, professor of political economy at Carnegie Mellon University. “It should get back to the period of 1985 to 2003 known as the Great Moderation.”

The Fed’s recent move, coupled with the uncertain performance of the economy, appeared likely to deepen the partisan impasse in Washington over how to respond to joblessness, the mortgage crisis, energy costs and other problems.

Since the enactment of the $168 billion economic stimulus package earlier this year, Democrats and Republicans have increasingly accused each other of inaction. Mr. Bush is demanding that Democrats make permanent the tax cuts that expire at the end of 2010, and Democrats are pressing for an additional $30 billion in spending.

Noting that the first rebate checks have started to go out to Americans from the stimulus package already enacted, Mr. Bush and his aides argue that Congress should measure the effects of the stimulus, and lower interest rates, before taking further action.

There has also been no agreement on what to call the current economic downturn. The administration has avoided the word recession and will probably continue to do so after the anemic but still positive growth figures released earlier Wednesday. Many Democrats unhesitatingly say the United States is in a recession.

On Tuesday Mr. Bush said “these are very difficult times, very difficult.” Treasury Secretary Henry M. Paulson Jr. has said that despite progress in stabilizing the financial markets, the economic risks in the future are “to the downside.”

On Monday, the Treasury Department painted a gloomy outlook, noting that unemployment had reached a two-and-a-half year high of 5.1 percent last month, and that non-farm jobs were hit by the first quarterly decline since 2003.

Like many analysts, administration economists say that housing is the weakest part of the economy. But Mr. Paulson and his aides say that the sharp declines of prices, sales and new construction of homes reflects a “necessary correction” after years of an unsustainable bubble.

Housing starts and sales of new single-family homes fell to a 17-year low in March, the Treasury said, and starts of single-family homes had dropped by 63 percent from a peak in January 2006.

Congressional Democrats have been moving toward enactment of legislation aimed at helping the estimated two million homeowners in danger of defaulting on their mortgages in the next year. But the administration opposes the Democrats’ approach, which would widen availability of federally insured mortgages.

The White House favors “modernization” of existing programs and agencies as a better way to help homeowners.

Economists disagree over whether lower interest rates will by themselves spur a turnaround in housing or business investment.

Many specialists, for example, say that the larger problem of skyrocketing American indebtedness and the danger of weak banks and investment banks, as well as possible defaults in consumer debt, student loans and other forms of debt, are putting a damper on lending even as lending rates decline.

While many economists say that inflation has become as big a threat as a recession, especially because of soaring energy and food prices, the Bush administration maintains that “core inflation” — outside the energy and food sectors — has remained stable, at about the same range of about 2.5 percent that it has been in the last four years.